Thanks guys, I fiddled around with lights and i think the grade was the biggy at the end. I decided to let the natural light fill the back of the warehouse, softbox as the key and a fill in at the side. I seperate the front two lights, i felt it gave his face some definition as oppose to it looking flat.
In terms of grading i shot very flat on the camera and used an old olympus lens.
Let us know what you think,
many thanks sam